I've made Image backups of both my drives with ATI, and they worked fine. Now, I'm trying to do a Differential backup (a file backup, of most everything on my C and D drives, the first one, into a new Backup Location with lots of room), and it seems like it starts okay, gets about 10% done at which time it's saying 2 hours to go, then, seven hours later, it's still on the same 10%. The icon in the system tray indicates it's still working, but in fact it's doing nothing. Not taking up any processor time, just sitting there. I even closed down all my other Windows programs and left the house for a while, but no dice. This is the third time I've tried to do this, all with the same results. I've made differential backups before, using V10, to the Acronis Secure Zone, but I've been unable to get this working now. Any ideas what's happing? I saw someone recommend doing the backup by booting from the CD, and while that wouldn't be bad for the first time, my intent is for this to run daily, while I'm working. Oh, just checked, and the file size of the backup is still zero bytes, after seven hours.